Air line crossbars for SZ circuit breakers

Technical Specifications

Material: Aluminum or Steel – The crossarms are typically made from durable metals such as aluminum or steel to ensure resistance to corrosion and mechanical damage. This is important for overhead lines, where environmental conditions like moisture and wind constantly affect the system.
Construction: Crossarms are designed to mount switches that can be applied to both overhead power lines and other high-voltage cable systems.
Distance Between Wires: Crossarms ensure the proper distance between wires and other components, preventing the possibility of short circuits and optimizing wire layout.
Dimensions: Sizes and construction vary depending on the installation location and specific needs, but crossarms are generally compact enough to be easily installed in overhead lines without overburdening the system.
Voltage: Used in various voltage levels – crossarms are suitable for both high-voltage overhead lines (up to 400 kV) and lower voltage networks such as 10 kV or 35 kV lines.
Safety and Installation Features: Crossarms generally include special fastening mechanisms to securely attach switches to overhead lines, ensuring the stability of the system.

Usage

High and Low Voltage Overhead Lines: SZ crossarms are used in both high-power overhead lines and low-voltage systems. They are typically installed in both industrial and residential areas where reliable and safe electricity transmission is required.
Switch Mounting: Crossarms are designed to mount switches – devices that allow for disconnecting or switching power lines. This is especially important when maintenance or power supply control is needed.
Industrial and Commercial Networks: Used in various industrial and commercial overhead lines, where stable and reliable equipment mounting is crucial to ensure continuous power supply.
Power Supply Systems: Crossarms are used in power supply systems to connect and manage power lines, which can be used both indoors and outdoors to ensure stable energy supply.

Advantages

Reliability and Stability: Crossarms ensure that switches are securely and safely attached to overhead lines, reducing the risk of equipment damage and failure.
Durability: Aluminum and steel, which are used in the construction of crossarms, are resistant to corrosion and mechanical wear, ensuring long service life.
Easy Installation: Crossarms are designed to be easy to install in both high and low voltage lines, as their construction is optimized for quick and simple assembly.
Reliable Protection: They maintain the proper distance between wires and switches, preventing short circuits that may occur due to improper equipment layout.
Wide Applicability: Due to various sizes and designs, crossarms are suitable for both low and high voltage overhead lines, making them versatile and useful for various projects.

Disadvantages

Not Suitable for Outdoor Conditions Without Additional Protection: Although crossarms are resistant to corrosion, some models may require additional protection against moisture or other adverse weather conditions to ensure long-term performance outdoors.
Dependence on Precise Installation: For optimal results, crossarms must be installed correctly and precisely. Improper installation can cause equipment instability and increase the likelihood of failure.
Cost: Crossarms, especially those designed for high-voltage lines, can be more expensive than other electrical components, so total installation costs need to be considered.

SZ crossarms for overhead lines are essential components that ensure the proper and reliable functioning of the power supply system. They guarantee safe and stable mounting of switches, protecting the equipment from potential failure and short circuit risks. Due to their durability, reliability, and easy installation, crossarms are an excellent solution for both high and low voltage overhead line systems, ensuring their stability and safety.